Well for now,
you need to click everything manually once,
Than using
Utils\Update->Update button
keeps your plugin settings during updates..

( as written before, auto preserve plugin settings.

)
also reminding
Utils\Plugin Manager available to preserve your settings manually.
*
For today, restoring setting of a project with another is very wrong since there are project specific plugins and plugin settings or plugin interfaces.....
Available options requires you do your settings once per project, which seems to be enough and easy for now.
Other features about download is theoretically possible, but not yet contributed.